The examination of lumbar muscle strain is mainly based on the clinical manifestations of the patient and the form of onset of the patient, and if necessary, CT or MRI is performed to exclude other organic diseases. For a patient with lumbar muscle strain, first of all, the patient’s complaints are very important, because patients with lumbar muscle strain will have typical painful manifestations, such as soreness of the lower back, or swelling of the lower back, and some patients will also have stabbing or burning pain in the lower back, and the patient’s lumbar pain will be aggravated when the lumbar muscles are strained, and will be alleviated when resting, and the patient’s lumbar pain will be alleviated when changing the position appropriately. These are the typical manifestations of lumbar muscle strain, as well as the patient’s inability to work bent over for a long time. Patients with lumbar muscle strain will find no abnormal changes in the spine during x-ray examinations, but a few may also have spinal deformities or osteophytes, and for older patients with osteoporosis, bone density tests and ECT examinations should also be performed, as osteoporosis may also lead to frequent low back pain. In other words, if spinal diseases such as lumbar disc herniation and organic diseases such as injury are excluded, patients with low back pain should consider lumbar muscle strain.